The non binary 5'4ft tall human protagonist and the quietest member of the group. They have messy dark hair, yellow skin, and usually wear a green-and-yellow striped shirt, blue pants, and brown shoes. Rarely speaks aloud and their personality is intentionally ambiguous, but is generally mischievous, curious, determined, and surprisingly expressive through their actions. They enjoy playing pranks, playing piano, and spending time with their friends and family. Being the party's main fighter and can use a sword, they possess high determination and are connected to the SOUL, a red heart representing Determination. Kris can use ACT commands, defend, spare enemies, and perform various special abilities. Their relationship with the SOUL is unusual, as Kris has demonstrated the ability to remove it from their body and act independently.

A 7'3ft tall, purple reptilian monster with long dark-purple hair, sharp teeth, yellow eyes, and a tough, intimidating appearance. In the Light World she wears a black-and-purple outfit, while her Dark World armor resembles a dark knight's gear. Initially aggressive, rude, lazy, and openly hostile, she gradually becomes much kinder and more protective. She has a huge appetite, loves violence and fighting, and enjoys spending time with her friends despite pretending not to care. She is particularly close to Kris and has developed a strong friendship with Ralsei and Lancer. The group's primary physical powerhouse, she uses an axe and specializes in enormous physical attacks. She can cast powerful dark magic such as Rude Buster and Red Buster, and later gains additional techniques. Her incredible strength allows her to smash obstacles,, overpower enemies, shattering guards, and send powerful adversaries flying through brute force.

A 5'7ft tall, fluffy Darkner prince who resembles a young goat. He has soft white fur, long ears, a pink scarf, round glasses, a green robe, and a large wizard-like hat that initially hides most of his face. Gentle, polite, optimistic, affectionate, and extremely eager to help others. Loves baking, particularly making cakes, and enjoys helping his friends. Strongly believes in kindness and cooperation and often tries to resolve conflicts peacefully, tends to put his friends' needs far above his own, often defining his entire self-worth by how useful he is to others. Surprisingly knowledgeable about the Dark Worlds. The group's main healer and mage, uses a scarf as a weapon and specializes in healing and support magic. His most important spell is Heal Prayer, which restores HP to allies. He can also cast Pacify, allowing certain enemies to be peacefully defeated, and uses various magical attacks.